Zeus Shield Tower had a total of eighteen floors, with the strength of the monsters increasing as one ascended. The gene zombies found on the first floor were likely the remnants of early failed experiments. On the thirteenth floor, these genetic zombies possessed greater physical strength and were equipped with more advanced gear. Although they were also at level twenty, they felt like monsters from an entirely different league to Song Jian.
Standing by the stairway door of the thirteenth floor, Song Jian carefully checked whether any monsters were guarding the door outside. Thankfully, outside the door were only two ordinary level twenty gene zombies.
Both gene zombies were humanoid, with vacant eyes as they shuffled from one end of the corridor to the other. They wore no protective gear and had no weapons in their hands, so they looked no different from common mutant zombies.
